MLA
Cabaniss, T. B. Letter from Cabaniss (Forsythe, Georgia) to L. R. Ray, (Newnan, Georgia). Cabaniss Answers Ray's Question Stating That James J. Stokes Murdered Bernard Meyers, Both in 1st Georgia Infantry Regiment, and Tells What Subsequently Happened to Stokes - June 13, 1884. 1884. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 8, Folder 10. https://digital.library.emory.edu/purl/85370rxx4z-cor.
APA, 6th edition
Cabaniss, T. B. (1884). Letter from Cabaniss (Forsythe, Georgia) to L. R. Ray, (Newnan, Georgia). Cabaniss answers Ray's question stating that James J. Stokes murdered Bernard Meyers, both in 1st Georgia Infantry Regiment, and tells what subsequently happened to Stokes - June 13, 1884 (Box 8, Folder 10) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/85370rxx4z-cor.
Chicago
Cabaniss, T. B. “Letter from Cabaniss (Forsythe, Georgia) to L. R. Ray, (Newnan, Georgia). Cabaniss Answers Ray's Question Stating That James J. Stokes Murdered Bernard Meyers, Both in 1st Georgia Infantry Regiment, and Tells What Subsequently Happened to Stokes - June 13, 1884.” Letters (correspondence). Civil War Collection, 1884. Box 8, Folder 10. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/85370rxx4z-cor.